I've got the manual that says to put 90 weight oil in the differential but I cannot find where to fill nor have I heard this talked about? I didn't know you had to put separate oil in the diff than the hydro. This is my first jake and I'm just not familiar wih it.

Thanks, Tom! I have a new filter for the Hydro, so will change the fluid in it when temps warm some. Need to find that fill plug for the rear end. The 'Drive/No Drive' selector is real stiff, may have to remove it and see what's happening there. Could be a low oil situation?

Thanks, Tom! I have a new filter for the Hydro, so will change the fluid in it when temps warm some. Need to find that fill plug for the rear end. The 'Drive/No Drive' selector is real stiff, may have to remove it and see what's happening there. Could be a low oil situation?

Mine doesn't move at all the knob just slips on the rod coming from the hydro

Thanks, Tom! I have a new filter for the Hydro, so will change the fluid in it when temps warm some. Need to find that fill plug for the rear end. The 'Drive/No Drive' selector is real stiff, may have to remove it and see what's happening there. Could be a low oil situation?